Infiniti G37 Coupe. Manual — part 1143
B2603 SHIFT POSITION STATUS
SEC-69
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
B2603 SHIFT POSITION STATUS
Description
INFOID:0000000001699966
BCM confirms the shift position with the following 4 signals.
• A/T selector lever
• P/N position switch
• P position signal from IPDM E/R (CAN)
• P position signal from TCM (CAN)
DTC Logic
INFOID:0000000001699967
DTC DETECTION LOGIC
NOTE:
• If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
• If DTC B2603 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine under the following conditions and wait for at least 1 second.
-
A/T selector lever is in the P position.
-
Do not depress the brake pedal.
2.
Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001699968
1.
CHECK DTC WITH TCM
Check “Self diagnostic result” with CONSULT-III. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> repair or replace the malfunctioning parts.
2.
CHECK PNP SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect A/T assembly connector and BCM connector M123.
3.
Check continuity between A/T assembly harness connector and BCM harness connector.
DTC
Self-diagnosis
name
DTC detecting condition
Possible causes
B2603
SHIFT POSITION
STATUS
BCM detects the followings status for 500 ms or more when
shift is in P position, and ignition switch is in ON position.
• Park/neutral position (PNP) switch: approx. 0V
• A/T device (detention switch): approx 0V
• Harness or connector
(A/T device circuit is open or
shorted.)
• Harness or connectors
[Park/neutral position (PNP)
switch circuit is open or
shorted.]
• A/T device (detention
switch)
• Park/neutral position (PNP)
switch
SEC-70
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
B2603 SHIFT POSITION STATUS
4.
Check continuity between A/T assembly harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK A/T DEVICE POWER SUPPLY
1.
Disconnect A/T device (detention switch) connector.
2.
Check voltage between A/T device (detention switch) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK A/T DEVICE POWER SUPPLY CIRCUIT
1.
Disconnect BCM connector M122.
2.
Check continuity between A/T device (detention switch) harness connector and BCM harness connector.
3.
Check continuity between A/T device (detention switch) harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-79, "Removal and Installation"
NO
>> Repair harness or connector.
5.
CHECK A/T DEVICE CIRCUIT
1.
Disconnect BCM connector M122 and IPDM E/R connector E6.
2.
Check continuity between A/T device (detention switch) harness connector and BCM harness connector.
3.
Check continuity between A/T device (detention switch) harness connector and ground.
A/T assembly
BCM
Continuity
Connector
Terminal
Connector
Terminal
F151
9
M123
140
Existed
A/T assembly
Ground
Continuity
Connector
Terminal
F151
9
Ground
Not existed
A/T device (detention switch)
Ground
Voltage [V]
Connector
Terminal
M137
10
Ground
Battery voltage
A/T device (detention switch)
BCM
Continuity
Connector
Terminal
Connector
Terminal
M137
10
M122
96
Existed
A/T device (detention switch)
Ground
Continuity
Connector
Terminal
M137
10
Ground
Not existed
A/T device
(detention switch)
BCM
Continuity
Connector
Terminal
Connector
Terminal
M137
11
M122
99
Existed
B2603 SHIFT POSITION STATUS
SEC-71
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK A/T DEVICE
SEC-66, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace A/T device. Refer to
TM-227, "Removal and Installation"
7.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
.
>> INSPECTION END
A/T device (detention switch)
Ground
Continuity
Connector
Terminal
M137
11
Ground
Not existed
SEC-72
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
B2604 PNP SWITCH
B2604 PNP SWITCH
Description
INFOID:0000000001699969
BCM confirms the shift position with the following 4 signals.
• A/T selector lever
• P/N position switch
• P position signal from IPDM E/R (CAN)
• P position signal from TCM (CAN)
DTC Logic
INFOID:0000000001699970
DTC DETECTION LOGIC
NOTE:
• If DTC B2604 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B2604 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine under the following conditions and wait for at least 1 second.
-
A/T selector lever is in the P or N position
-
Do not depress the brake pedal
2.
Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END.
Diagnosis Procedure
INFOID:0000000001699971
1.
CHECK DTC WITH TCM
Check “Self diagnostic result” with CONSULT-III. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> repair or replace the malfunctioning parts.
2.
CHECK PNP SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect A/T assembly connector and BCM connector M123.
3.
Check continuity between A/T assembly harness connector and BCM harness connector.
4.
Check continuity between A/T assembly harness connector and ground.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2604
PNP SWITCH
BCM detects the following status for 500 ms or
more when the ignition switch is in the ON position.
• N position input signal exists. Shift position signal
from TCM does not exist.
• N position input signal does not exist. Shift posi-
tion signal from TCM exists.
• Harness or connectors
[Park/neutral position (PNP) switch
circuit is open or shorted.]
• Park/ neutral position (PNP) switch
A/T assembly
BCM
Continuity
Connector
Terminal
Connector
Terminal
F51
9
M123
140
Existed
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